C7 fuel filter thing, frustrating

[Chuck 1935]

Originally Posted by cbeierl

1R0751 is the 2u CAT secondary filter.

ABP-N122-S3226FL01 (aka ABPN122R50419 or ABPS3226FL01) is a 10u Alliance primary/water separator.

ABP-N122-S3226FL02 (aka ABPN10GFS19593 or ABPS3226FL02) is a 30u Alliance primary/water separator.

WRONG, WRONG ,WRONG What these filters are is a 10 micron and 20 micron .
DO NOT USE ANTHING BUT A 2 MICRON FILTER IN A SINGLE FILTER APPLICATION
Attached is a chart that will probably confuse more than help. No matter what all the experts tell you ONLY USE A 2 MICRON FILTER

fuel_filters

[cbeierl]

Originally Posted by Chuck 1935

WRONG, WRONG ,WRONG What these filters are is a 10 micron and 20 micron .
DO NOT USE ANTHING BUT A 2 MICRON FILTER IN A SINGLE FILTER APPLICATION
Attached is a chart that will probably confuse more than help. No matter what all the experts tell you ONLY USE A 2 MICRON FILTER

fuel_filters

Yes, in a single filter CAT installation you need to use a 2u filter/water separator--there is no dispute about that.

However, in a 2-filter installation (as referenced in wagonmaster2's post to which I was responding) you use the filters I indicated in my previous post, including the 2u secondary filter and either the 10u or 30u primary/water separator.

[Chuck 1935]

Originally Posted by cbeierl

Yes, in a single filter CAT installation you need to use a 2u filter/water separator--there is no dispute about that.

However, in a 2-filter installation (as referenced in wagonmaster2's post to which I was responding) you use the filters I indicated in my previous post, including the 2u secondary filter and either the 10u or 30u primary/water separator.

OK, I was responding to the original post where FIRE UP has a one filter set up.
Before I bought my Motorhome, it was maintained by a "professional " They did such a great job that they threw away the correct filter and plastic bowl and replaced it with a 10 micron filter. I was so adament because I wanted to make sure FIRE UP got the right filter before he lunched an injector.

[Cat]

I would not fill your filter up with fuel from a gas/diesel station. Most fuel stations only filter their fuel with a 30 micron filter. That kind of contamination can can kill a set of injectors fast and possible just doing it once. All modern injectors are very very sensitive to contamination due to the fuel pressure they build up to inject.

[Chuck 1935]

Originally Posted by Cat

I would not fill your filter up with fuel from a gas/diesel station. Most fuel stations only filter their fuel with a 30 micron filter. That kind of contamination can can kill a set of injectors fast and possible just doing it once. All modern injectors are very very sensitive to contamination due to the fuel pressure they build up to inject.

Very true, that is why I said in post #9 to use a fresh quart of transmission fluid. It's new, it's clean, and it's easy to use and will work every time with NO problem no matter what any expert will tell you.

[Chuck 1935]

FIRE UP
Here is another good web site for you.
CAT RV Club

[wallynm]

Prices are from 2005 so there will be an increase.

3126 engine installation that came from a chassis builder with a
single filter and no primer pump the following parts are required.
The To add an OE Caterpillar secondary fuel filter WITH PRIMER PUMP to a
prices listed are over the counter retail-- local prices may
vary.

The primary filter (the one you already have) should be installed
between the fuel tank and transfer pump. The secondary filter (the
one you are adding) should be installed between the transfer pump
and the engine head (pressure side of fuel system).

Fuel hoses will need to be made, but most hydraulic shops have fuel
hose with the appropriate fittings or your Cat dealer can have them
made. This filter/primer can be mounted anywhere you want for easy
access to servicing.

This will allow the installation of both the primary and secondary
fuel filters DRY. Any diesel you pour in a filter is NOT filtered
and could contain particles larger than the 2 microns which can not
be seen by the eye, but could affect the injection system. And with
the primer pump, all you do is hand pump it until it becomes firm.
You have removed all the air from the fuel system so the engine will
start right up.

My recommendation would then be for a 10 micron primary filter/water
separator element along with the Caterpillar 2 micron secondary fuel
filter that you are adding. You will experience less filter clogs,
as the filtering duty is shared by two filters with the first
removing water and larger particles and the new one the small ones.

# 1 Fuel Filter 1R-0751 $10.28
#3 Fuel Filter Base 141-5138 $39.56
#3A Insert Fuel Filter 112-6523 $19.64
#10 Plug 9S-4182 $4.59
#5 O-ring for #10 6V-5048 $1.92
Primer Pump 105-2508 $65.87
Primer pump gasket 1P-0436 $0.85
Bolts for primer pump
Quantity 1 8C-6561 $0.22
Quantity 1 7X-2501 $0.12
Washers for primer pump
Quantity 1 8T-4205 $0.11
Quantity 1 8T-4224 $0.11

[Chuck 1935]

Originally Posted by wallynm

Prices are from 2005 so there will be an increase.

3126 engine installation that came from a chassis builder with a
single filter and no primer pump the following parts are required.
The To add an OE Caterpillar secondary fuel filter WITH PRIMER PUMP to a
prices listed are over the counter retail-- local prices may
vary.

The primary filter (the one you already have) should be installed
between the fuel tank and transfer pump. The secondary filter (the
one you are adding) should be installed between the transfer pump
and the engine head (pressure side of fuel system).

Fuel hoses will need to be made, but most hydraulic shops have fuel
hose with the appropriate fittings or your Cat dealer can have them
made. This filter/primer can be mounted anywhere you want for easy
access to servicing.

This will allow the installation of both the primary and secondary
fuel filters DRY. Any diesel you pour in a filter is NOT filtered
and could contain particles larger than the 2 microns which can not
be seen by the eye, but could affect the injection system. And with
the primer pump, all you do is hand pump it until it becomes firm.
You have removed all the air from the fuel system so the engine will
start right up.

My recommendation would then be for a 10 micron primary filter/water
separator element along with the Caterpillar 2 micron secondary fuel
filter that you are adding. You will experience less filter clogs,
as the filtering duty is shared by two filters with the first
removing water and larger particles and the new one the small ones.

# 1 Fuel Filter 1R-0751 $10.28
#3 Fuel Filter Base 141-5138 $39.56
#3A Insert Fuel Filter 112-6523 $19.64
#10 Plug 9S-4182 $4.59
#5 O-ring for #10 6V-5048 $1.92
Primer Pump 105-2508 $65.87
Primer pump gasket 1P-0436 $0.85
Bolts for primer pump
Quantity 1 8C-6561 $0.22
Quantity 1 7X-2501 $0.12
Washers for primer pump
Quantity 1 8T-4205 $0.11
Quantity 1 8T-4224 $0.11

YOU DON'T NEED ALL THAT STUFF, I have driven all over the United States and only have I, 2 micron filter, 90,000 miles and never NEVER had a filter plug up. Changed my filters at 25,000 mile increments. Relax, No need to work up a sweat unless your stealing diesel out of a drum at a construction site.

[1ciderdog]

I tend to agree with Chuck1935 about not needing the second filter however I change the single fuel filter on mine about every 10 to 11,000 miles.
Safe Travels
Bob

[wallynm]

CHUCK 1935

1. I posted the second filter installation process because it seemed several wanted to know what is was.
2. I do not steal fuel from construction sites but I have been known back in the day to use drip gas which can be exciting.
3. I normally purchase fuel from places that have a high turn over of fuel to get fresh fuel.
4. I have had one clogged filter in the last 82,000 miles but I have installed a second filter.
5. I am the founder of the CAT RV yahoo group which is where these instructions were posted by a Cat employee before Cat got out of the OTR business. .
6. I am not arguing with you as it is obviously to me "THAT YOU ARE A KNOW IT ALL"!!!

[Chuck 1935]

Originally Posted by wallynm

CHUCK 1935

1. I posted the second filter installation process because it seemed several wanted to know what is was.
2. I do not steal fuel from construction sites but I have been known back in the day to use drip gas which can be exciting.
3. I normally purchase fuel from places that have a high turn over of fuel to get fresh fuel.
4. I have had one clogged filter in the last 82,000 miles but I have installed a second filter.
5. I am the founder of the CAT RV yahoo group which is where these instructions were posted by a Cat employee before Cat got out of the OTR business. .
6. I am not arguing with you as it is obviously to me "THAT YOU ARE A KNOW IT ALL"!!!

Don't get your chaps in a wad there cowboy !!
I didn't say you stole fuel,
As far as being a know it all, I will say your pretty close, I do know a bunch but not all.

OK enough of that, I didn't mean to demean what you were saying. You are right on about how to, and what to buy to install a second filter and thank you for that. That was some good information.
The point I was making was that FIRE UP was asking about his single filter and I took your remarks to mean that is what HE should do. I was concerned that you and some others posters were scaring the heck out of him when all he needed was what kind of filter belongs on there.
Sorry I got you riled up. It was not my intention.

[JonD]

These are what I buy for my stock 2004 Meridian.
Wix 33783 and NAPA 3783

It is a single 2 micron filter setup with NO lift or priming pump.
A 10 micron [or worse, a 30] is a recipe for injector failure.

My guess is every diesel needs one before the injector.

[1ciderdog]

ON my 2004 I use one Alliance filter available at freightliner stores. # KPN-N2232FRT03
I believe it is a two micron.
Safe Travels
Bob

[JonD]

I meant to say every diesel needs a 2 micron before the injector.